Their runs are usually for about 5 minutes. They could go longer but they start laughing so hard at each other that they loose their concentration. They work well together and do a good job of coordinating their movements to control the board. Both of them started wake surfing last year but did not really get into it until this summer. A couple weeks ago, they wanted to try doubling up on a single board but I didn't think they'd even be able to get up. Low and behold, they dropped the rope and free surfed. It was a blast to watch.